On Wed, Aug 26, 2020 at 5:56 AM Victor Sudakov <v...@sibptus.ru> wrote:
> Dear Colleagues, > > I've made some changes to /etc/dhcp/dhclient.conf, now I need to make > dhclient reread it (and apply the changes to /etc/resolv.conf). > > There seems to be no dhclient service in systemd, and I don't find > any info about signalling dhclient with "kill -HUP" etc. > > "dhclient -x" or "dhclient -r" bring the network down (I've actually > confirmed that on a test host), and I loathe to risk it on a remote box. > A reboot seems too radical. > > Any ideas please? > A simple "dhclient" as root (or "sudo dhclient") without parameters should be enough. In syslog you should be able to see something like this afterwards: Aug 26 06:10:41 mailtest dhclient[899]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7 Aug 26 06:10:41 mailtest dhclient[899]: DHCPOFFER of 192.168.15.23 from 192.168.15.1 Aug 26 06:10:41 mailtest dhclient[899]: DHCPREQUEST for 192.168.15.23 on eth0 to 255.255.255.255 port 67 Aug 26 06:10:41 mailtest dhclient[899]: DHCPACK of 192.168.15.23 from 192.168.15.1 Aug 26 06:10:41 mailtest dhclient[899]: bound to 192.168.15.23 -- renewal in 73845 seconds.
